Trigger-movement for self-loading firearms.



D. W. TOMLINSON, JR. TRIGGER MOVEMENT FOR SELF LOADING HRBARMS. APPLICATION FILED 00T. 27, `1909.

944,832.. Pat-med Deazs, 1909. r

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Ammin A NETE STATES ATENT OFFICE'.

DANIEL W. ToMLINsoN, JE., 0E BATAVIA, NEW YORK, ASSIGNOR 'ro HENRY 13.I

EEBIGER, 0E NEW ORLEANS, LOUISIANA.

TRIGGER-MOVEMENT FOR SELF-LOADING FIREARMS.

To all whom it may concern.:

Be it known that I, DANIEL lV. TOMLIN- soN, Jr., a citizen of t-heUnited States, residing at Batavia, county of Genesee, State --of New York, have invented a new and useful Trigger-Movement for Self- Loading Firearms, of which the following is a specication.V

My invention relates to a new and useful triggerl movement for self loading fire arms wherein l simplify and strengthen the auxiliary scar which engages the hammer when the trigger is drawn back.

lt further consists in providing a plurality of scars, one of which is automatically moved into operation when the trigger is drawn backward and is directly disengaged by the movement of the trigger forwardly.

lt 'further consists in directly pivoting the auxiliary scar to the trigger, whereby said auxiliary scar actuated by the movement of the trigger.

It further consists of other novel features of construction, all as will be hereinafter fully set forth.

Figure 1 represents a longitudinal section through a portion ot' a self loading gun frame with the hammer cocked and ready for tiring. Fig. 2 represents a longitudinal section showing the parts in different positions with the auxiliary scar in engagement with the hammer notch. Fig. 3 represents a side elevation in detached position of the trigger showing the movement thereof in dotted lines. Fig. 4 represents a plan vien7 of the trigger and auxiliary scar.

Similar numeralsl of reference indicate corresponding parts in the figures.

Referring to the drawings, for the purpose-of illustrating my invention, I have Shown in the accompanying drawing one form thereof which at present is preferred by me, since the same has been found in practice to give satisfactory and reliable results, although it `to be understood that the various instrun'ientalities of which my invention consists can be variously arranged and organized and that my invention is not limited to the'precise arrangementand organization ofthese instrumentalitics as hercin shown and described.

1 designates a frame having upper and lower tangs 2 and 3, stock assembling screw et and trigger guard 5. Within this portion Specification of Letters Patent.

Application filed October 27, 1909.

Patented Dee. 28, 1909. Serial No. 524,792.

of the frame I have illustrated a hammer 6 pivoted at 7, a main spring rod 8, hammer spring 9, collar 10 and pin 11, comprising the hammer and operating mechanism, pressing forwardly at all times striking to force it lagainst the firing pin, which is not shown. The rod 8 is preferably broken away in the figures to show a preferably longitudinal slot 12, through which passes theI trigger spring post 13, around the upper portion' of which is the coiled trigger spring 14 having suitable bearing points 1n order to cause the said trigger spring post to suitably bear against and actuate the trigger. y

15 designates a trigger which is pivoted at 16, in any suitable manner, in the present instance on a'pin which serves as a positive pivot and said trigger is provided with a sear 17 on one side of the pivotal point and with an arm 1S on the other side of its piv'- otal point, said trigger spring-post 13 engaging with said arm 1S, which is preferably provided with a recess for receiving the end of said post, it being understood that the said trigger spring post 13 tends to depress and hold in depressed position the arm 18 of the trigger in order thatthe sear 17 thereof engages witlrthe notch 1t) on the hammer G or is in proper position to engage therewith.

Q0 designates an auxiliary/scar pivoted at' position of the trigger 15, when ready` for tiring with the Ihan'nner cocked, has the scar 17 thereof in engagement with the notch 19 of the hammer (S, at which time tihepivotal point 2l 'of the auxiliary scar 20 is situated so that the lever arm 23 of the said auxiliary' sear 2() is resting upon the point 25 ofthe tang 3, the spring 24 holding the same in' this position. As soon, however, as the trigger is pulled rearwardly for firing, the pivotal point 2l of the auxiliary scar 2O carried by the trigger 15, is elevated, carrying 95 As will be seen t'rom Fig. l, the normal the said auxiliary sear u wardly and removing the lever arm 23 rom its point of Contact 25 and causing the spring 24 to act to lower the lever arm 23 which elevates the engaging end22 into suitable position to f immediately engage with the notch 19 of the hammer 6, as it returns to its backward position due to the recoil, the parts then being in ,the position'seen lnFlg. 2. As soon as the trigger 15 is released and moves forwardly again, the pivotal point 21 is lowered and with it the auxiliary sear 20 so that the lever arm 23 thereof contacts 'with the oint 25 of the tang 3 and as the downmovement of the pivotal point 21 continues the point` 25 serves as a. fulcrum for the lever varm 23 of the auxiliary sear 22 and moves the latter upon its pivotal point 21 thus de ressing or lowering the engaging end 22- and removes the same from engagement with the notch 19 of the hammer, which is then caused to engage withv the sear 17 of the trigger 15 which has meanwhile 'moved into position for this purpose. From this it will beV seen that I have provided a trigger' with a sear thereon for enoragement with the notch of a hammer and have directly mounted the -auxiliary sear upon the trigger in such a manner that as the ivotal point is raised and lowered the auxi iary'sear'is properly actuated to cause the engaging end thereof to engage with the notchof the hammer when the same is thrown back by the recoil. .In the present instance,.I have provided slot 26 in the auxiliary sear in which moves the pivotal pin 16 of the trigger, so that the auxiliary sear may be independently actuated and I have cut away a portion of the trigger 15 as at 27 in order to accommodate the auxiliary sear-20, this being done 1n order to give proper clearance for the parts. Having thus described my invention, what g I claim as new and desire to secure byLetters Patent, is

1. In a device of the character described,

- a tri ger having a sear and a fixed pivot, an

auxi lary sear pivotally mounted upon said trig er, whereby the pivotal point of said auxi iary sear is raised and lowered by the `action of the trigger and means for actuating said auxiliary s'ear to elevate the engaging end thereof, when the pivotal point is raised.' l

A2. In a device of the character described, a trigger having a sear and a fixed pivot, an aux` iary sear pivotally mounted upon said trig er, whereby the pivotal point of said auxi iary sear is. raised and lowered by the vaetionof the trigger, means for actuating said auxiliary sear to elevate the engaging end thereof when the pivotal point is raised, and means for stopping the downward movement of the auxlliary sear as the pivotal pomt is lowered and acting as a fulcrum to lower the engaging end to. disengage the same from the notch of the hammer when the trigger sear is in proper position to engage with said notch.

3. In a device of the character described, a trigger having a sear and a fixed pivot, an auxiliary sear pivoted to said trigger in the rear of said fixed pivot and means bearing upon said auxiliary sear in the rear Vof its pivotal oint in order to lelevate the engaging en thereof, when the trigger is moved rearwardly.

4. Ina device of the character described, a trigger having a sear and a fixed pivot, an auxiliary sear pivoted to said trigger in the rear of said fixed pivot, and resilient means bearing upon said auxiliary sear in the rear of its pivotal point in order to elevate the` engaging end thereof, when the trigger is moved rearwardly. l

5. In a device of the character described., a tri ger having a sear and a fixed pivot, an auxiary sear pivoted to said, trigger in the rear of said fixed pivot, resilient means bearing upon said auxiliary sear in the rear of its pivotal oint, in order to elevate theengaging en thereof when the trigger is moved rearwardly, and means for stopping the downward movement of the auxiliary sear, as the trigger moves forwardly, and acting as a fulcrum to lower the engaging end to disengage the same from the notch of the hammer, when the trigger sear is in proper position to engage with said notch.

6. In a device of the character described, a trigger having a sear and a fixed pivot, an. auxiliary sear pivotally mounted on said trigger at a point on the opposite side of said pivot from the trigger sear, an engaging end on said auxiliary sear, a lever arm on said auxiliary sear on the opposite side of its pivotal point from said engaging end, and means bearing upon said lever arm for lowering the same and thus elevating the l engaging end thereof when said trigger is moved rearwardly.

f7. In a device of the character described,

a trigger having a sear and a fixed pivot, trigger actuating means for said trigger, au auxiliary sear pivotally mounted on said trigger whereby said pivotal point is raised and lowered by the movement of said trigger, an engaging end on said auxiliary sear upon one side of its pivotal point and resilient means bearing upon said auxiliary sear upon the opposite side of the pivotal point for raising said engaging end when the pivotal point is raised.

8. In a device of the character described, a hammer having' a notch, resilient means for'operating the same, a pivoted trigfrer having a sear, an auxiliary sear pivotal-ily lao means for actuating said auxiliary Sear for causing the engaging end thereof to be elevated whenthe trlgger is moved rearwardly.-

9. In a device of the character described,

.,A a hammer having a notch, a` trigger having e Sear and a xed pivot, an auxiliary Sear pivotally mounted upon said trigger Wherehy the pivotal point offsaid auxiliary Sear 

